Record Display for the EPA National Library Catalog

RECORD NUMBER: 12 OF 57

Main Title Diurnal variations in traffic flow and carbon monoxide concentrations /
Author DeMarrais, Gerard A.
Other Authors
Author Title of a Work
DeMarrais, Gerard A.
CORP Author Environmental Sciences Research Lab., Research Triangle Park, N.C. Meteorology and Assessment Div.
Publisher U.S. Environmental Protection Agency, Office of Research and Development, Environmental Sciences Research Laboratory,
Year Published 1977
Report Number EPA-600/4-77-016
Stock Number PB-266 743
OCLC Number 52757954
Additional Subjects Carbon monoxide ; Traffic surveys ; Diurnal variations ; Concentration(Composition) ; Air pollution ; Correlation ; Wind velocity ; Sites ; Monitoring ; Air pollution sampling
Internet Access
Description Access URL
https://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=9100JASU.PDF
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
EJBD  EPA 600-4-77-016 Headquarters Library/Washington,DC 03/26/2014
EKBD  EPA-600/4-77-016 Research Triangle Park Library/RTP, NC 08/01/2003
ELBD ARCHIVE EPA 600-4-77-016 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ESAD  EPA 600-4-77-016 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB-266 743 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation viii, 50 p. : ill. ; 28 cm.
Abstract
Traffic count and carbon monoxide (CO) data for January and July from three states are compared in order to reveal any diurnal variations in the two measurements. The diurnal patterns for the 18 traffic count stations indicate that there are average patterns of traffic flow that are representative of all stations for periods of one month. Comparisons of data for the 36 CO monitoring stations show correlations which vary from large positive to large negative. However, eliminating a few monitoring stations which show relatively poor correlations yields groups within each state that have consistent patterns. The diurnal variations in CO concentrations are not well correlated with traffic patterns. Part of the poor correlation appears to be due to the diurnal variations in vertical mixing and wind speeds and part to the exposures and locations of the sampling instruments.
Notes
"April 1977." "EPA-600/4-77-016."